.sidebar {
    width: 250px;
    height: 100vh; /* 将侧边栏的高度设置为视口高度 */
    background-color: #f8f8f8;
    padding: 10px;
    border: 1px solid #e0e0e0;
}

.sidebar-item {
    margin-bottom: 5px;
}

.sidebar-item a {
    display: block;
    padding: 5px;
    color: #333;
    text-decoration: none;
}

.sidebar-item a:hover {
    background-color: #f2f2f2;
}